Ventis HEI240 Wood Burning Insert

Product Images

Ventis HEI240 Wood Burning Insert

Ventis HEI240 Wood Burning Insert

Ventis HEI240 Wood Burning Insert

Ventis HEI240 Wood Burning Insert

Approx. Heating Area: 800 - 2,100 sq. ft.Max Output: 70,000 BTU/hEligible for Tax Incentive

Approx. Heating Area: 800 - 2,100 sq. ft.

Max Output: 70,000 BTU/h

Eligible for Tax Incentive

As low as$2,651.00

Product Details:

Are you tired of losing all the heat from your old traditional fireplace? The Ventis HEI240 Wood Burning Insert is an ideal choice for updating your inefficient fireplace. The 2.4 cubic ft firebox is capable of holding up to an 18" log and offers a max burn time of 8 hours on one load of wood. It produces up to 70,000 BTUs and heats up to 2,100 square feet. The non-catalytic secondary burn technology makes the HEI240 insert clean burning and efficient with an emissions rating of 1.54 g/h and an optimum efficiency of up to 77%.

The Ventis HEI240 insert is not only built for heating, the large 16 7/8" x 10 1/4" glass surface allows you to enjoy the beauty of having a fire. The modern stove design is made to fit with any type of decor and will be the focal point of any room. Choose between a 29" x 44" regular faceplate or the 34" x 50" large faceplate to give the insert a finished look to seal around the fireplace opening and the insert. The Ventis HEI240 comes standard with a 144 CFM blower to help push the warmth across the room.

Specifications & Manual

Ventis HEI240 Wood Burning Insert Installation Manual

Ventis HEI240 Wood Burning Insert Specifications
Fireplace opening – minimum (Height) 23 3/8"
Fireplace opening – minimum (Width) 28 7/8"
Fireplace opening – minimum (Depth) 15 3/4"
Combustion Technology Non-catalytic
Fuel Type Dry Cordwood
Recommended heating area (sq. ft.) 500 to 2,100 ft² (46 to 167 m²)
Nominal firebox volume 2.4 ft³ (0.068 m³)
Maximum burn time 8 hours
Maximum heat output (dry cordwood) 75,000 BTU/h (19 kW)
Overall heat output rate (min. to max) 14,800 BTU/h to 28,600 BTU/h (4.34 kW to 8.38 kW)
Average overall efficiency-Dry cordwood 69 % (HHV) 74% (LHV)
Optimum efficiency 77 %
Average particulate emissions rate 1.54 g/h (EPA / CSA B415.1-10)
Average CO 89.4 g/h
Maximum log length 18 in (457 mm) east-west
Flue outlet diameter 6 in (150 mm)
Recommended connector pipe diameter 6 in (150 mm)
Type of chimney ULC S635, CAN/ULC-S640, UL 1777
Baffle material Vermiculite
Approved for alcove installation Not applicable
Approved for mobile home installation No
Type of door Simple, glass with cast iron frame
Type of glass Ceramic glass
Blower Included (up to 144 CFM)
Particulate emission standard EPA / CSA B415.1-101
USA Standard (Safety) UL 1482, UL 737
Canada Standard (Safety) ULC-S628

Minimum Clearance to Combustibles:

Clearance to Combustibles*
Clearance – top (measured from the platform on which the appliance is installed)** 84"
Clearance - Combustible side mantle to unit 12"
Clearance - Combustible top mantle to unit 27"
Clearance – combustible side wall to unit 16"
Clearance – minimum floor protection in front of the appliance 16” US / 18” CA
Clearance – top shelf to unit 27”
* The information given on the certification label affixed to the appliance always overrides the information published in any other media (owner's manual, catalogues, flyers, magazines and/or web sites).
**Some appliances have been tested with a low ceiling. Before setting up your unit, refer to the installation manual.



  • 2.4 cu. Ft. firebox heats up to 2100 sq. Ft. at 70,000 BTUs
  • 6" flue for economical installations
  • 18" log size
  • 1.54 g/hr. emissions
  • Burn time - 8 hrs.
  • 77% optimum efficiency
  • Blower Included
  • 16 7/8" x 10 1/4" Glass Surface

Help & Documents:

Required Accessories:


The Faceplate is the component that flashes around the fireplace insert and covers the fireplace. The Faceplate for the HEI240 insert is available in two sizes: 29" x 44" and 34" x 50". The size you choose should be based on the opening of your existing fireplace. Choose the 29" x 44" Faceplate size if the opening of your fireplace is less than 29" x 44". If your fireplace opening is greater than 29" x 44", you will want to select the 34" x 50" Faceplate size.

Optional Accessories:

Rigid Firescreen

The Rigid Firescreen allows you to burn wood in the fireplace insert with the door open just like an old-time fireplace. Hear the crackle of the wood, watch the flames dance around in the firebox and relax around the wood insert on a cold winter's night. The Rigid Firescreen is easy to install and easy to remove when you are ready to load more wood. The fireplace insert should not be burning with the door open without the firescreen.

Optional Chimney Liner Kit

Rock-Flex 316Ti stainless steel chimney liner kits are UL listed and the perfect choice to install for your new wood burning insert. Each kit includes the 316Ti Flexible Chimney Liner, Vertical Appliance Connector, 13 x 13 in. Premium Top Plate, and Round Rain Cap.

Tax Credit Information

Ventis HEI240 Wood Fireplace Insert is EPA rated and has a HHV rating of 75% which qualifies for the wood and pellet stove tax credit through the end of 2032. From January 2023 through December 2032 you can receive up to a 30% tax credit for the installation and parts required, such as chimney liner and insulation. This is one of the largest tax credits the wood and pellet stove industry has ever had. If you are looking to update your old drafty fireplace consider the Ventis HEI240 Wood Fireplace Insert.

Click here to view more information about the tax credit

Ventis Tax Certificate


Frequently Bought Together:

DIY Center

(AKA ‘The Rockford Files’)

From video tutorials to product walkthroughs, we have a variety of DIY resources just for you! Click the button below to view our entire library.


Need Help?

We are here to answer all of your questions




Our 316Ti flexible chimney liner and chimney liner components have passed the rigorous testing at the Underwriters Laboratories with best in class status and are UL Listed. So if you are looking for UL listed chimney liner sold directly to homeowners, then look no further than Rockford Chimney

Customer Testimonials

Back in July you gave me excellent advice re. sizing/purchasing a flue liner for the chimney associated with my wood stove. I'd like to thank you once agai... More

—AE Northfield, MN

A few weeks ago I ordered a chimney liner system for my fireplace insert. Your salesman recommended the liner system plus the insulating blanket. I just wa... More

—AH Happy customer

Just got around to installing my new smooth flexible liner and deluxe terra cotta cap (wow). The quality of your product is second to none. Very pleased an... More

—B.B. from Massachusetts

Thanks so much for the great tech service from Dennis, very knowledgable, friendly and proffessional.Your website is the best, beats your competition by fa... More

—Bill in Knoxville

Sue and Dennis, I received the final part of my order yesterday (the chimney cap that actually fits over the chimney chase). It looks wonderfu... More


Hello, I was shopping for an fireplace insert and called RCS to ask why they were so much cheaper than my local guy, the reply was " we sell thousand of th... More

—Chris, PA.